This circuit was obtained in an American documentation from the 80's. The transistors can be equivalent to those indicated and the crystal can reach a few tens of megahertz.
The presented circuit can work as a divider by 2 of frequency. The base is an LM3900, operational...
The figure presents a configuration that can be very useful for audio equipment designers. What...
This circuit was obtained in Linear Technology Applications of 1997, using an integrated circuit...